Sylvania



(No Model.) 2 'sheets sheet 1.

C. P. BOSTIAN. SEWING MACHINE.

N0. 382,794. Patented May 15, 1888:.

. ATTORNEYS.

U ITED" STA'ILES PAT NT OFFICE. f

CHARLES P. BOSIIAN, OF MILTON, ASSIGNOR TO HIMSELF, JOHN F MEOK' LEY, OF WATSONTOWN, AND CHARLES H. DOUGAL, OF MILTON, PENN- SYLVANI A.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 382.794, dated May 15, 188 8 Application filed March 23, 1887. Serial No. 232,693. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES P. BOSTIAN, of Milton, in the county of Northumberland and State of Pennsylvania, have invented a new and Improved Sewing-Machine, of which the following is a full, clear, scription. 7

The object of my invention is to provide a new and improved sewing-machine for mak- 'ing simultaneously a double row of stitches with two needles and one shuttle.

The invention consists in the construction and arrangement of certain parts and details and combinations of'the same, as will be fully described hereinafter, and then pointed out in the claims.

plan view of the bed-plate and feed-bar with the needles in section. Fig. 5 is a plan view of the shuttle-race with the needles in section.

Fig. 6 is an elevation of the lower part of the needle-bar. Fig. 7 is a sectional elevation of the same. Fig. 8 is a sectional plan view of the same on the line 00 w of Fig. 7, and Fig. 9 is a side elevation .of the tension device of the needle-threads.

The sewing-machine A, of any approved construction, is provided with the usual mechanism for operating the needle-bar B, the shuttle 0-, and the feed-bar D.

As'any of the well-known forms of sewing- I machines can be used with my improvement, and as the various devlces now in use for operatin g the needle-bar, the shuttle, and the feedbar can be employed, I do not further describe and exact depoints of the two needles are thrown together in the shuttle-race F by means of the slots G v and G, formed in the wall F of the said shuttle-race F, and of which slotsthe slot G is straight and in line with the shuttle-race,

while the other slot, G, is inclined andis in line atits lower end with the shuttle-race and the lower end of the other slot, G.

It will be seen that when the needles E and E move downward they pass through the cloth opposite each other; but the point of the needle E, passing into the inclined slot G,

is. bent inward, and when in its lowest position is in line with the point of the other needle,

'E, and also in line with the shuttle-race, F,

and when the shuttle 0 now moves forward it passes through the loops of thread formedby both needles and locks both loops by its shuttle-thread simultaneously and in the same manner as an ordinary loop' of one needlethread.

Instead of using the wall of the shuttle-race for guiding the needles E andE in the straight slot G and in the inclined slot G, I may use a separate piece having a straight slot and an inclined slot secured to the under side or the bed-plate, but in close proximity to the shuttle-race. One of the needles, preferably the needle 'E,.may be removed, and the machinethen operates as an ordinary single-stitch sewinglmachine.

The needles ting into a socket or central aperture in the lower end of the needle-barBU The socketpieceH is provided with a slot,into which fits Eand E are supportedin the socket-piece H, having a reduced end, H, fita frame, I, having a central recess, 1, into. which the needle ends are placed alongsideiof each other and held securely by-a set-screw, J, screwing through the socket-piece Hupoii the ends of both needles. The frame I is also' provided with two prongs, I", which fitin recesses formedon the socket-piece H, and thus prevent a sidewise motion of the upper part The threads L and L before entering the eye K are acted upon by the take-up N, which 1 is located in front of the head A,and consists of the spring-lever O, actuated by the up-anddown movement of the presser-bar P and provided at its lower end with two eyes, 0 and O, placed alongside each other, and through which pass the respective threads L and L, which, before entering the eyes 0 and 0, pass over a pin, Q, and after leaving the eyes 0 and 0 pass over a similar pin, Q, before entering the eye K on the needle-bar B. A spring-bar, Q extends from one pin,Q, to the other pin, Q, and prevents the threads L and L from slipping off the said pins Qand Q.

The bobbin-carrier R is located on top of the arm A of the sewing-machine A, and between it and the head A is located the tension device T. (Shown in Figs. 1 and 9.) This device consists of the bottom plate, U, provided on its front end with a cross-bar, U, and its rear end with two bent springs, U each of which supports aspring-plate, V, held in contact at its front end with the cross-bar U by means of a nut, U screwing on a bolt, U, and against the top of the said plate V. Each bolt U is secured to the bottom plate, U,and passes upward through a slot in the said spring-plate V. Each of the plates Vis provided with an eye, V, between the nut U and its front end. The threads L and L from the respective bobbins on the carrierR are led to an eye placed near the tension device T and then passed,respectively, to the eyes V of the spring-plates V. The threads are then led from the. under sides of the spring-plates V toward the front and passed between the said spring-plates and the crossbar U, the tension being regulated by the nut U The threads then pass from the tension device to aroller, WV, held on thehead A, and then pass through a slot in the top of the needle-bar B and then down to the takeup N, as before described.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, in a sewing-machine, withthe needlebar, a race, a shuttle, and an operating mechanism, of two needles carried by the needle-bar and at an angle to the width of and both entering the same race, and mechanism for bringing the points of the needles into position within the race for the single shuttle to take both loops, substantially as set forth.

2. The combination, in a sewing-machine, with the needle-bar,the shuttle, the race, a slot having vertical walls, a slot having an inclined wall, the slots beingat their bottoms in a plane parallel with the inner wall of therace, below the needle-bar, and an operating mechanism, of the two needles carried by the needle-bar and set at an angle to the width of the race, whereby the inclined wall ofthe slot will throw the point of one entering needle into line with the other needle and the race, substantially as set forth.

3. In a sewing-machine, a socket-piece provided with a slot and a transverse set'screw entering the slot, the needle-carrying frame within the slot and having a needle-receiving recess in the path of the set-screw,and means for securing the said needle-frame within the slotted socket-piece, substantially as set forth;

4. In a sewing-machine, the slotted socketpiece having a transverse set-screw entering the slot and recesses at opposite sides of the upper end ofthe slot,the needle-carrying frame having a recess in its upper endto form prongs which enter the said recesses in the socketpiece and a needlereceiving recess in the path of the set-screw, and the ring surrounding the lower end of the socket-piece and frame, substantially as setfortln 5. In a sewing-machine, the slotted socketpiece, its needle-clamping set'screw, and the needle-carrying frame within saidslot and having a needle-receiving recess in line with the set-screw, the ring surrounding the lower end of the socketpiece and frame, substantially as set forth.

6. The combination, with the needle-bar of a sewing-machine having a socket in its lower end and a set screw, and the operating mechanism, of the socket-piece having a reduced upper end entering said socket and provided with a vertical slot and a transverse set-screw, the needle-carrying frame having a vertical needle receiving recess in line with said transverse set-screw, and the ring surrounding the lower end of the socket-piece and frame, substantially as set forth.

7. In asewing-machine, thetake-upN, consisting of the spring-lever O, pivoted at its upper end to the front of the head and operated from the presser-bar, the two eyes 0' O, placed alongside of each other at the lower end of said lever, the pins Q Q'on the head, one above the other at opposite sides of the eyes, and the spring Q, extending from one pin to the other, substantially as set forth.

on ARLES P. BOSTIAN.

Witnesses:

J. F. GAUGER, D. H. KRAUSER.

ISO 

